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Artificial wetlands are a new type of polluted water treatment.
人工湿地是一种新型的污水处理技术。
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The polluted water is treated in the sewage treatment plant.
受污染的废水在污水处理厂内处理。
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The polluted water is treated in the sewage treatment plant.
受污染的废水在污水处理厂内处理。
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